#!/usr/bin/gawk -f
#/* vim: set filetype=awk : */ -*- awk -*- 

BEGIN{
	FS=","
	#Prep="cat"
	#Learn="nbk"
	#Data="a2b/breast-cancer"
	#Column=17
	
}

	{ sub(/#.*/,"")}
/^[ \t]*$/{next}
	{
		#print Prep
		if(($1 == Data)&&($2==Learn)&&($3==Prep)&&(Column > 0)&&(Column <= NF))
		{
			#print $2 " & " $1 "," $Column
			print $1 "&" $2 "&" $3 "," $Column
			#print $Column
		}
	}